Cache Price Cut May Not Lower Costs: Fable 5.1 Outputs More Tokens

eyishazyer · x · 2026-09-02

Cache read pricing dropped 75%, with Anthropic citing typical 25% savings. However, Artificial Analysis found Fable 5.1 costs 20% more per task at max effort due to 1.7x higher output. Cognition measured a cost drop. Users should verify effort settings and output length before assuming savings.

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